D-Notice

In 2017, the notices were reworded and then reorganized into the following categories: According to an article in Defence Viewpoints, between 1997 and 2008 there were "30 occasions where the committee secretary has written to specific editors when a breach in the D-Notice guidelines is judged to have occurred".

[3] In 2008, a D-notice was issued to prevent further disclosure relating to sensitive anti-terror documents left on a train by a senior civil servant.

On 8 April 2009, the committee issued a D-notice in relation to sensitive anti-terror documents photographed when Assistant Commissioner Bob Quick arrived at Downing Street for talks about current police intelligence.

[7] On 25 November 2010, just prior to the publication of the United States diplomatic cables by WikiLeaks, the committee issued a D-notice, which Index on Censorship said "effectively ... [asks that it] be briefed by newspaper editors before any new revelations are published".

[10] In 2017, a notice was issued to British journalists regarding revealing the author of the controversial Steele dossier alleging collusion between Donald Trump and the Russian government during the 2016 presidential election.

The 1995 Commission of Inquiry into the Australian Secret Intelligence Service reported that newspapers confessed ignorance that the D-Notice system was still operating when it was drawn to their attention in 1993 and 1994.

[18] The proposed National Security Legislation Amendment Bill (2014) has been described as an extension of the D-Notice system that would subject journalists who reveal details of intelligence operations to criminal penalties.

The episode is titled "The National Anthem" and within it the UK government imposes a D-Notice to try to stifle a controversial ransom demand that the (fictional) prime minister have sex with a pig to secure the release of a member of the royal family.

In the comic book series Transmetropolitan (1997), a legally binding type of D-Notice is issued by the US President in an attempt to prevent the main character, gonzo journalist Spider Jerusalem, from exposing police corruption and a government-sponsored massacre.

In the film Official Secrets (2019), a journalist from The Observer questions whether a D-Notice would be applied to a story which exposes intelligence leaked by a GCHQ employee.

In Season 4 Episode 1 (2017) of Sherlock, Mycroft Holmes mentions putting out a D-Notice to prevent any unauthorised disclosure of the contents of the meeting held behind closed doors.

In Season 2 Episode 2 of the BBC television series The Capture (2019), at 32 minutes in, DSU Gemma Garland (played by Lia Williams) mentions 'you can't broadcast it; we'll slap a D-Notice on it.'